基于Webgis的土地覆盖遥感信息传播框架

IF 0.8 Q4 REMOTE SENSING
Grazia Caradonna, A. Novelli, E. Tarantino, R. Cefalo, U. Fratino
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引用次数: 3

摘要

在过去的几十年里,地中海地区经历了严重的土壤退化。在这方面,利用卫星数据进行仔细的陆地观测对于了解自然资源的长期使用模式和促进其可持续管理以监测和评价潜在退化至关重要。考虑到这一问题的环境和政治利益,迫切需要一个集中的存储库和机制来共享土地变化的地理空间数据、信息和地图。地理空间数据收集是许多用户最重要的任务之一,因为在访问和使用数据方面存在重大障碍。这一限制可以通过结合现有的免费和开放源代码的地理信息系统软件(FOSS4G)实现WebGIS来克服。本文初步讨论了通过处理开放的多时相、多尺度卫星数据,在地理数据库中收集栅格数据的方法,旨在检索土地退化现象的指标(即土地覆盖/土地利用分析、植被指数、趋势分析等)。然后,我们描述了一种设计WebGIS框架的方法,以便通过地图传播信息以进行领土监测。利用POSTGIS数据库和OpenLayers库扩展了WebGIS的基本功能。Geoserver是定制的,用于设置和增强网站功能,使用PostgreSQL和创新工具开发各种高级查询,有效地进行多层叠加分析。最终产品是一个简单的系统,不仅提供交互式咨询的机会,而且还提供下载处理过的遥感数据的机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Webgis Framework for Disseminating Processed Remotely Sensed on Land Cover Transformations
Abstract Mediterranean regions have experienced significant soil degradation over the past decades. In this context, careful land observation using satellite data is crucial for understanding the long-term usage patterns of natural resources and facilitating their sustainable management to monitor and evaluate the potential degradation. Given the environmental and political interest on this problem, there is urgent need for a centralized repository and mechanism to share geospatial data, information and maps of land change. Geospatial data collecting is one of the most important task for many users because there are significant barriers in accessing and using data. This limit could be overcome by implementing a WebGIS through a combination of existing free and open source software for geographic information systems (FOSS4G). In this paper we preliminary discuss methods for collecting raster data in a geodatabase by processing open multi-temporal and multi-scale satellite data aimed at retrieving indicators for land degradation phenomenon (i.e. land cover/land use analysis, vegetation indices, trend analysis, etc.). Then we describe a methodology for designing a WebGIS framework in order to disseminate information through maps for territory monitoring. Basic WebGIS functions were extended with the help of POSTGIS database and OpenLayers libraries. Geoserver was customized to set up and enhance the website functions developing various advanced queries using PostgreSQL and innovative tools to carry out efficiently multi-layer overlay analysis. The end-product is a simple system that provides the opportunity not only to consult interactively but also download processed remote sensing data.
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28.60%
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5
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